As David Vonderhaar recently tweeted Black Ops II would be releasing a new game mode. Recently a few things have been leaked claiming this game mode will be the currently cut game mode Hacker. The game mode would entail the player hacking AGRs on the map in order to get kills. Information found includes a code on the ELITE website and a video of a user playing the game mode. Other information is an image of the game modes icon and sound clips, however these were already in the game files.
Images (click to enlarge)